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Instruction Manual
Model 7072
Semiconductor Matrix Card
Contains Operating and Servicing Information
WARRANTY
Keithley Instruments, Inc. warrants this product to he free from defects in material and workmanship for a period of I year from
date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: prohcs, cahlcs, rcchargcahlc hattcr-
its, diskcttcs, and documentation
During tbc warranty period, we will, at our option, either repair or replace any product that proves to he defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Clcvcland, Ohio. You
will he given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service facility.
Repairs will he made and the product returned, transportation prepaid. Repaired or replaced products arc warranted for the halancc
of the original warranty period, or at last 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley's express written consent, or misuse
of any product or part. This warranty also does not apply to fuses, software, non-rechargeahlc battcrics, damage from battery leak-
age, or prohlcms arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN
ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF: ITS INSTRU-
MENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POS-
SIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COSTS
OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON, OR DAM-
AGE TO PROPERTY.
STATEMENT OF CALIBRATION
This instrument has hecn inspcctcd and tested in accordance with specifications puhlishcd by Kcithlcy Instruments, Inc.
The accuracy and calibration of this instrument al-c traceahlc to the National Bureau of Standards through cquipmcnt which is cali-
brated at planned intervals by comparison to certified standards maintained in the Laboratories of Kcithlcy Instruments, Inc.
Model 7072 Semiconductor Matrix Card
Instruction Manual
01988, Keithley Instruments, Inc.
All rights reserved.
Cleveland, Ohio, U.S.A.
Third Printing, April 2000
Document Number: 7072-901-01 Rev. C
Manual Print History
The print history shown below lists the printing dates of all Revisions and Addenda created for this manual. The
Revision Level letter increases ,IIphabetically as the manual undergoes subsequent updates. Addenda, which arc
`
released between Revisions, contain important change information that the user should incorporate immcdiatcly into
the manual. Addenda arc numbcrcd sequentially. When a new Revision is created, all Addenda associated with the
previous Revision of the manual are incorporated into the new Revision of the manual. Each new Revision includes
a revised copy of this print history page.
Revision A (Document Numbcr 7072-901-01) ... .................... ................... February lY88
Revision B (Document Number 7072-901-01) ......................................... ......... April I988
Addendum B (Document Number 7072-901-02). ............................................... April I988
Addendum B (Document Numbcr 7072-901-03). ......................................... February I996
Revision C (Document Number 7072-901-01) ,...............................,.......,.....,.., April 2000
Safety Precautions
The following safety precautions should be observed before using Users of this product must bc protected from electric shock at all
this product and any associated instrumentation. Although some in- times. The responsible body must ensure that users are prevented
~tmmcnt~ and accessories would normally be used with non-haz- access and/or insulated from every connection point. In some cases,
ardous voltages, there are sitilafions when hazardous conditions connections must be exposed to potential human contact. Product
may be prcscnt. users in these circumstances must bc trained to protect themsclvcs
from the risk of electric shock. If the circuit is capable of operating
This product is intended for use by qualified personnel who recog- at or above 1000 volts, no conductive part of the circuit may be
nize shock hazards and are familiar with the safety precautions rc- exposed.
quired to avoid possible injury Read the operating information
carefully before using the product. As described in the International Electrotechnical Commission
(IEC) Standard IEC 664, digital multimctcr measuring circuits
The types of product users are:
(e.g., Keithley Models 175.A. 199,2000,2001,2002, and 2010) are
Responsible body is the individual or group responsible for the use Installation Category II. All other instruments'signal terminals are
and maintenance of equipment, for ensuring that the equipment is Installation Category I and must not be connected to mains.
operated within its specifications and operating limits, and for en-
suring that operators are adequately trained. Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
Operators use the product for its intended function. They must be NEVER connect switching cards directly to AC mains. When con-
trained in electrical safety procedures and proper use of the instru- necting sources to switching cards, install protective devices to lim-
ment. They must be protected from electric shock and contact with it fault current and voltage to the card.
hazardous live circuits.
Bcforc operating an instrument, make sure the line cord is connect-
Maintenance personnel perform routine procedures on the product ed to a properly grounded power receptacle. Inspect the connecting
to keep it operating, for example, setting the line voltage or replac- cables, test leads, and jumpers for possible wear, cracks, or breaks
ing consumable materials. Maintenance procedures are described in before each use.
the manual. The procedures explicitly state ifthe operator may per-
form them, Otherwise, they should be performed only by service For maximum safety, do not touch the product, test cables, or any
personnel. other instruments while power is applied to the circuit under test.
ALWAYS remove power from the cntire test system and discharge
Service personnel are trained to work on live circuits, and perform any capacitors before: connecting or disconnecting cables or jump-
safe installations and repairs ofproducts. Only properly trained ser- ers, installing or removing switching cards, or making internal
vice personnel may perform installation and service procedures. changes, such as installing or removing jumpers.
Exercise extreme caution when a shock hazard is present. Lethal Do not touch any object that could provide a current path to the
voltage may be present on cable connector jacks or test fixtures. The common side of the circuit under test or power line (earth) ground.
American National Standards Institute (ANSI) states that a shock Always make measurements with dly hands while standing on a
hazard exists when voltage levels greater than 30V RMS, 42.4V dry, insulated surface capable of withstanding the voltage being
peak, or 60VDC are present. A good safety practice is to expect measured.
that hazardous voltage is present in any unknown circuit before
measuring.
The instrument and accessories must be used in accordance with its The WARNING heading in a manual explains dangers that might
specifications and operating instructions or the safety oftbe equip- result in personal injury or death. Always read the associated infor-
ment may be impaired. mation very carefully before performing the indicated procedure.
Do not exceed the maximum signal levels ofthe instruments and ac- The CAUTION heading in a manual explains hazards that could
cessories, as defined in the specifications and operating informa- damage the instmmcnt. Such damage may invalidate the warranty.
tion, and us shown on the instrument or test fixture panels, or
switching card. Instrumentation and accessories shall not be connected to humans.
When fuses are used in a product, replace with same type and rating Before performing any maintenance, disconnect the line cord and
for continued protection against fire hazard. all test cables.
To maintain protection from electric shock and fire, replaccmcnt
Chassis connections must only be used as shield connections for
components in mains circuits, including the power transformer, test
measuring circuits, NOT as safety earth ground connections.
leads, and input jacks, must be purchased from Kcithlcy Instm-
men& Standard fuses, with applicable national safety approvals,
If you are using a test fixture, keep the lid closed while power is up-
may be used if the rating and type are the same. Other components
plied to the device under test. Safe operation requires the use of a
that are not safety related may be purchased from other suppliers as
lid interlock.
long as they are equivalent to the original component. (Note that se-
lected pans should be purchased only through Keithlcy Instruments
Ifa @ screw is present, connect it to safety earth ground using the
to maintain accuracy and functionality of the product.) If you are
wire recommended in the user documentation.
unsure about the applicability of a replacement component, call a
Keithley Instruments office for information.
Then symbol on a" instrument indicates that the user should re-
fer to the operating instructions located in the manual.
To clean an instrument, use a damp cloth or mild, water based
cleaner. Clean the exterior of the instrument only. Do not apply
Them symbol on an instrument shows that it can source or mca-
cleaner directly to the instrument or allow liquids to enter or spill
sure 1000 volts or mom, including the combined effect of normal
on the instrument. Products that consist of a circuit board with no
and c",,,,,,~" mode voltages. Use standard safety precautions to
case or chassis (C&L data acquisition board for installation into a
avoid personal contact with these voltages.
computer) should "ever require cleaning if handled according to in-
structions. If the board bccames contaminated and operation is af-
fected, the board should be returned to the factory for proper
clca"i"glservici"g.
Rev. IO199
SAFETY PRECAUTIONS
The following safety precautions should be observed before using the Model 7072 and the associated
instruments.
This matrix card is intended for use by qualified personnel who recognize shock hazards and are familiar
with the safety precautions required to avoid possible injury. Read over this manual carefully before
using the matrix card.
Exercise extreme caution when a shock hazard is present at the test circuit. User-supplied lethal voltages
may be present on the card connector jacks. The American National Standards Institute (ANSI) states
that a shock hazard exists when voltage levels greater than 30V RMS or 42.4V peak are present. A good
safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring.
Do not exceed 200V between any two pins or between any pin and earth ground
Inspect the connecting cables and test leads for possible wear, cracks, or breaks before each use.
For maximum safety, do not touch the test cables or any instruments while power is applied to the
circuit under test. Turn off the power and discharge any capacitors before connecting or disconnecting
cables from the matrix card.
Do not touch any object which could provide a current path to the common side of the circuit under
test or power line (earth) ground. Always make measurements with dry hands while standing on a
dry, insulated surface capable of withstanding the voltage being measured.
Do not exceed the maximum allowable input of the matrix card, as defined in the specifications and
operation section of this manual.
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